Body-elevating mechanism for dumping-wagons or the like.



H. S. PALM.

BODY ELEVATING MECHANISM FOR DUMPING WAGONS 0R THE LIKE. APPLlcAuoN msn1AN.22. |916.'

Patented Apr. 30, 1918.

HENRY S. PALM, 0F READTNG, PENNSYLVANA.

BIDY-ELEVATING? MECHANSM FOR DUMPINGr-WAGONS OR THE LIKE.

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To all whom it may concern.'

Be it known that I, HENRY S. Patin a citizen of the United States,residing at Reading, in the county of Berks and State of Pennsylvania,have invented certain new and useful Improvements in Body-ElevatingMechanism for Dumping-Wagons o r the like, of which the following is aspecification.

My invention relates particularly to bodyelevating apparatus for dumpingwagons, and it consists in the improved elevatinglever mechanism andoperating means therefor hereinafter-fully described in connection withthe accompanying drawings, the novel features ofwhich are definitely setforth in the claims.

Figure 1 is a sectional side elevation showing a movable body and asupporting frame therefor, in connection with my improved mechanismv aspreferably constructed; the body being shown in partially elevatedposition, but the folded-down position being indicated in dotted-lines.

Fig. 2 1s a partial plan view ofthe same. with the body removed, thelevers on one side being broken away to more clearly showy theconstruction.

Referring to the drawing, which shows a preferred embodiment of myinvention, 5, 5, indicate the side members of a supporting frame for therelatively movable body 6 carried thereon. These side members aremaintained in their -spaced relation by` a front cross member 7 and arear spacing bar 8, and each is formed, as shown, with a forwardlyextending guide way 9, near its lower edge. Elevating mechanism forraising the body from its supporting frame is adapted to fold-up withinthe latter; when the body is resting upon the frame, and,

when extended to vertically lift the body to a considerable height.

' This elevating mechanism, as shown in the drawing,l comprises mainarms 10, 10, formed of straight bars having their rearward endspivotally connected at 11, 11, to the rearward ends of the side member5, 5, near the upper ed e thereof, and their forward ends 12, 12, sidably pivoted to the forward end of the body 6 in guide ways 13, 413,,provided'therefon said ends being preferably provided with` rollers asshown to insure free movement in the guide ways. Midway of the length ofthe arms 10, 10, are pivotally secured at 14, 14;,jframe memberpecication of Letters Patent.

Patented apr.. 39, 1916.

Application filed January 22, 1916. Serial No. 73,511.

arms 15, 1.5, the free ends of which are slidably engaged in the frameguide ways 9, 9. This construction, 4as will be readily seen, formstoggle levers for ,elevating the front of the body 6; the mainV arms 10,10, between the pivots 14, 1-1 and ends 12, 12, forming the body membersof the toggles, and the frame arms 15, 15, forming the frame membersthereof.y The portions of the main arms rearward of the pivots la, 1&1,to the end pivots 11, 11, form rigid body eX- tensions of the toggles.-Vhen sliding movement is imparted, as hereinafter described, to theendsof the frame arms 15, 15, to move them rearward in their guide ways 9,9, the toggle levers are extended, swinging on the pivots 11, 11, of themain arms, the

ends 12, 12 of said arms moving backward 1n the guide ways 13, 13,secured to the body,- in elevating the latter.

Rear elevating arms 20, 20, also formed of straight bars, are pivotallyconnected at 21, 21, to the rearward end of the body 6, and theirforward ends are slidably engaged 1n the guide ways 9, 9, of the sidemembers 5, 5. Pivotally connected to these rear arms at 22, 22, midwayof their length, are rear frame member arms 23, 23, their free endsbeing pivoted at 24, 24, to the rear ends of the side members 5, 5,directly below the pivots 11, 1 1 as shown. This construction forms reartoggle levers, for elevating the rear of the body 6; the'arms20, 20,between the body pivots 21,21, and the frame member pivots 22, 22,forming the body members of the toggle, and the rear frame arms 23, 23forming the frame members thereof.

The portions of the arms 20, 20, between s the pivots 22, 22, andtheguide way ends,

kform rigid body extensions,- and when moved rearward in said guide ways9, 9 eX- tend said toggles to elevate the rear of the body.

As before stated, it is only' necessaryv to slidably move rearward inthe guide ways 9, 9, the ends of the arms 15,15, and 20, 20, bothpivotally engaged therein, to extend both the front and rear toggles tovertically elevate the body. Any means for so sliding these toggleactuating ends may be employed, the `simple, preferred manner, as shownin the drawings, comprising racks 25, 25 having lugs pivotally securedtothe ends of the arms 15, 15, and moved longitudinally by pinion gears26, 26' on crank shaft 27. The shaft 27 may be driven in .any well knownmanner, and I have indicated a gear wheel 28 outside the supportingframe for conveniently locating a train of drivin gears, not shown.Directly below the shaft 27 is located a parallel shaft 29, havingrollers 30, 30, thereon to support said racks and maintain them inconstant mesh with the pinions 26, 26.

The ends of the arms 15, 15 are provided with rollers, as shown, bearingin the guide ways 9, 9, to facilitate the sliding movement of said arms,and I preferably connect the ends of these arms by a shaft 31 to whichthe lugs of racks 25, are pivoted. A similar shaftv32 connects the endsof 'the arms 20, 20, which also have rollers bearing in the guide ways9, 9. The pivotal lugs 33, 33, of the racks 25,125, are bent upward soas to permit the racks to pass under the shaft 32; and said lugs arepreferably prof vided with spaced shoulders 34, '34, to contact withsaid shaft 32 and the arms 20, 20.

As shownl in the drawings, the arms 15, 15, when in folded'downposition, extend slidably move nearer the front end ,of the guide ways9, 9

than the sliding ends of the arms 20, 20, so that the rearward movementof the racks `first operate only the front toggles to partially raisethe front of the body 6, until the shoulders 34, 34 come into contactwith the shaft 32, when the rear toggles begin to extend and raise therear of the body with the further raising of the front of the same. Thisconstruction permits of reducing the strains by elevating'only a portionof the load at the start, and at the Sametime gives -a pitch to the bodyfor permitting the ready discharge of its load. This pitch however isdetermined by the proportions of the toggles vand may be varied asdesired to suit the requirements.

My invention thus fully described provides a simple and eectiveelevating mechanism, and one that while it lifts to a great height,folds vinto a comparatively small space when in lowered. position, withnothing depending below the supporting frame, which latter is importantas it permlts ready application to vehicles, especially motor trucks. Ido not desire lto limit myself to the specific structure shown anddescribed, but:

What I claim is: c

1. In combination with a movable body and a supporting frame thereforhaving its forward portion provided with a horizontal guide-way;separate front and rear toggleever connections between said frame an'dbody, the former having its body member extended rearwardly andpivotally connected to the rear portion of the frame and its framemember pivotally connected to saidguide way, and the latter having itsbody member extendedl forwardly and rear portion of the frame; and meansfor moving both of said guide-way connections rearwardly to effect theelevation of the body.

2. In combination with a movable body and a supporting frame thereforhaving its forward portion provided with a horizontal guide-way;separate front and rear togglelever connections between 'said frame andbody, the former having its body member extended rearwardly andpivotally connected to the rear portion of the frame and its framemember ivotally connected to said guide way, an the latter having itsbody member extended forwardly andpivotally connected to said guide way,and its frame member pivotally connected to the rear portion of theframe; and means for moving both of said guide-way connectionsvrearwardly to effect the elevation of the body; said horizontalguide-way being located below the pivotal frame connection of the fronttoggle-lever body member.

3. In combination with a movable body and a supporting frame therefor'having its forward portion provided with a horizontal guide-way;separate front and rear togglelever vconnections between said frame andbody, the former having its body member extended rearwardly andpivotally connected to the rear portion of the frame and its framemember pivotally connected to said guide-way, and the latter havin itsbody member extended forwardly an pivotally connected to said guide-wayand its frame member pivotally connected to the rear portion of theframe; and operating means comprising a horizontally movable framemember plvotally connected to one of said guide-way connections'andadapted to operatively engage the other.

4. In combination with a movable body and a supporting frame thereforhaving its forward portion provided with a horizontal guide-way;separate front and rear togglelever connections between said frame andbody, the former having its body member extended rearwardly andQpivotally connected to the rear portion of the frame and its framemember pivotally kconnected to said guide-way, and the latter having itsbody member extended forwardly and pivotally connected to said guide-wayand its frame member pivotally connected to the rear portion of theframe; and operatin means comprising a horizontally movable frame memberhaving a pivot lug connected to' one of said guide-way connections andadapted to operatively engage the other guide-way connection during adetermined portion of its movement.

5. In combination with a movable body and a supporting frame thereforhaving its ating means comprising a horizontally movable frame memberhaving one end thereof connected to one of said pivotal connections andadapted to engage and disengage the other of said pivotal connections ata determined point in the guide-way.

6. The combination of a movable body; a supporting frame having itsrearward portion rovided with an upper pivot-support adjacent thebody-supporting top of the trame and with a lower pivot-support, and itsforward portion provided with a lower horizontal guide-way; separatefront Aand rear toggle-lever connections between said frame andbody, theformer having its body member extended in an approximately straightlineand pivotally connected to said upper pivot-support and its framemember pivotally connected to said guide-way, and the latter having itsbody member extended in an approximately straight line and pivotallyconnected to said guide-way, and its frame member pivotally connected tosaid lower pivot-support; and means for moving said guide-way.connections horizontally to effect the elevation of the body.

7. 'llhe combination of a movable body; a supporting frame having itsrearward portion provided with an upper pivot-support adjacent thebody-supporting top of the frame and with a lower pivot-support, and itslforward portion provided with a lower horizontal guide-way; separatefront andl rear toggle-lever connections between said frame and body,the former having its body member extended in an approximately straightline and pivotally connected to said upper pivot-support and its framemember pivotally connected to said .guide-way, and the latter having itsbody member extended .in an approximately straight line and pivotallyconnected to said guide-way, and its `frame member pivotally'connectedto said lower pivot-support; and an operating gear on said framecomprising a horizontally movable rack pivotally connected to one ofsaid guide-way connections and adapted to operatively engage the other.

8.I In combination with a movable body and a supporting 'frame thereforhaving its forward portion provided with a horizontal guide-way;separate front and rear togglelever connections between said frame andbody, the former having its body member extended rearwardly andpivotally connected to the rear portion of the frame and its framemember pivotally connected to ,said guide-way, and the latter having itsbody member extended forwardly and pivotally connected to saidguide-way, and its frame member pivotally connected to the rear portionof the frame; and means for moving both of said guide-way connectionsrearwardly to effect the elevation of the body; one of said toggle-leverbody `members having a slidable body connectlon.

ln testimony whereofll aix my signature.

HENRY S. PALM.

team each, by aanmaning tha tommlatdloaer m Wattnm t l .Nimmt l mit..mi. W.

